Lao, Y-F, Perera, AGU, Li, LH et al. (4 more authors) (2016) Mid-infrared photodetectors operating over an extended wavelength range up to 90 K. Optics Letters, 41 (2). pp. 285-288. ISSN 0146-9592
Abstract
We report a wavelength threshold extension, from the designed value of 3.1 to 8.9 μm, in a -type heterostructure photodetector. This is associated with the use of a graded barrier and barrier offset, and arises from hole–hole interactions in the detector absorber. Experiments show that using long-pass filters to tune the energies of incident photons gives rise to changes in the intensity of the response. This demonstrates an alternative approach to achieving tuning of the photodetector response without the need to adjust the characteristic energy that is determined by the band structure.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 Optical Society of America. This is an author produced version of a paper published in Optics Letters. Uploaded in accordance with the publishers self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) |
Funding Information: | Funder Grant number EU - European Union 247375 |
Depositing User: | Symplectic Publications |
Date Deposited: | 20 Jan 2016 16:10 |
Last Modified: | 14 Apr 2017 03:23 |
Published Version: | http://dx.doi.org/10.1364/OL.41.000285 |
Status: | Published |
Publisher: | Optical Society of America |
Identification Number: | 10.1364/OL.41.000285 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:93420 |